Update build.yml

Author: CuteReimu

.github/workflows/build.yml

@@ -14,7 +14,7 @@ on:
     branches: [ "master" ]
 
 permissions:
-  contents: read
+  contents: write
 
 jobs:
   build:
@@ -32,5 +32,20 @@ jobs:
       - name: Setup Gradle
         uses: gradle/actions/setup-gradle@v3
 
+      - name: Format code
+        run: ./gradlew ktlintFormat
+
       - name: Execute Gradle build
         run: ./gradlew build
+
+      - name: Commit formatted code
+        run: |
+          if [[ -n $(git status --porcelain) ]]; then
+          git config --local user.name 'github-actions[bot]'
+          git config --local user.email '41898282+github-actions[bot]@users.noreply.github.com'
+          git add --all
+          git commit -m "gradlew ktlintFormat"
+          git push
+          else
+          echo "No changes to the output on this push; exiting."
+          fi